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東莞站前鋼結構如何減少焊接變形中操作？

? 1、東莞鋼結構夾具固定法：用剛性很大的夾具夾緊組合焊件，用強制力操控變形，然后進行焊接，這種辦法稱夾具固定法。焊接時焊件內(nèi)部發(fā)作的脹大力和縮短力，被夾具的作用力所約束，可明顯地削減變形。但此種辦法焊件內(nèi)部存在較大的內(nèi)應力，對要求焊件內(nèi)應力較小的構件，不宜選用此法。
東莞站前鋼結構如何減少焊接變形中操作？的圖片

2、反變形法：構件在焊接前，應根據(jù)被焊金屬構件狀況判別。在焊后冷卻時，發(fā)作變形的方向和縮短量，將焊件預先向相反方向曲折或斜置，焊接后因為本身縮短變形，剛好恢復到預訂的形狀方位。即可到達避免焊接變形與削減焊接應力的目的。

3、選用定位操控法：構件在焊接前，用許多焊點將焊接部位或四周定位，還可在焊縫兩邊壓以重物，這種辦法稱定位操控法。

4、焊接次序法：正確組織焊接次序，是避免焊接變形的有用辦法。焊接變形的規(guī)則是焊縫引起的變形，每道焊縫引起的變形量，一般不能彼此抵消，變形的方向，焊的焊縫引起的變形方向相一致。

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